It’s clearly a white and gold dress under a somewhat blue light (probably sunlight through clouds or maybe a “daylight” bulb).
If you see differently, I strongly recommend a colour blindness test, it could change your life for the better! <3
It’s clearly white and gold to me. I showed my son and wife and they need to get their eyes checked because they both see blue and black. I could see my wife trolling me, my son too, but I asked him before I asked her, and he’s too young to have seen this the last time it came around.
Actually, it’s funny you say that since I am colorblind and have always seen it as black and blue. More to the point, the dress is actually black and blue.
I looked at it an hour ago, and all I could see was white and gold. I picked up my phone now, and it’s blue and black. Your brain is going to interpret it based on the context within which you’ve been in, and what the local lighting conditions are.
FWIW, as others have mentioned, the actual dress was, in fact, blue and black.